flyback diode in buck regulator

Discussion in 'General Electronics Chat' started by anhnha, Dec 31, 2015.

  1. anhnha

    Thread Starter Active Member

    Apr 19, 2012
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    Why don't we connect the flyback diode between two ends of inductor instead of between one end and ground in the figure below?

    [​IMG]
     
  2. Jony130

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    Feb 17, 2009
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    What ?? Where is a ground in your digram?
     
  3. anhnha

    Thread Starter Active Member

    Apr 19, 2012
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    With ground I meant "negative pole" of the battery.
    Why not connect anode of the diode to the other end of inductor?
     
  4. anhnha

    Thread Starter Active Member

    Apr 19, 2012
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    Well, I misunderstood here. The diode is not flyback diode.
     
  5. Jony130

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    anhnha likes this.
  6. anhnha

    Thread Starter Active Member

    Apr 19, 2012
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    Yes, I see. With that connection, during Toff the loop formed by inductor and diode and no energy is transferred to load.
     
  7. anhnha

    Thread Starter Active Member

    Apr 19, 2012
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    I think the diode is still called flyback diode?
     
  8. Jony130

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    Feb 17, 2009
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    Yes, but the catch diode, and freewheeling diode are also in use.
     
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